This module introduces reading and writing support for JPEG XL directly from Python 3.
JXLPy is based on JPEG XL implementation in imagecodecs but doesn't it require Numpy and any external dependencies besides Cython and libjxl.
It also provides support for Pillow via plugin.
This project is still in alpha stages and needs testing. It may contain bugs!
$ pip install jxlpy-
Make sure you are using Python 3.x and pip for that version
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Build and install libjxl according to instructions here
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Install patchelf and auditwheel
$ sudo apt-get install patchelf $ pip install auditwheel
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For Pillow plugin, make sure that Pillow is installed (optional)
$ pip install ---upgrade pillow
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Clone this repository
$ git clone https://github.com/olokelo/jxlpy $ cd jxlpy -
Build wheels
$ pip wheel . -
Use auditwheel to put necessary libraries into your wheel
$ export LD_LIBRARY_PATH=/usr/local/lib $ python -m auditwheel repair --plat linux_x86_64 jxlpy-*.whl
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Install newly created wheel
$ cd wheelhouse $ pip install jxlpy-*.whl
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Now you should be good to go :)
You can run examples to check if everything works correctly
Installation steps were tested on Ubuntu 20.04
| Feature | Status | Importance | Notes |
|---|---|---|---|
| Reading and writing non-animated 8 bit RGB/RGBA image | Done | - | - |
| Creating lossless images | Done | - | - |
| Reading animations | Done | - | - |
| Pillow plugin | Partial | High | Animation seeking? |
| Creating animations | Failed | Medium | - |
| Reading HDR images | Needs testing | Medium | - |
| Writing HDR images | Not started | Low | - |
| Reading and writing floating point images | Not started | Low | - |
| Support EXIF metadata | Failed | High | It seems like there's no API for that |
| Support for other colorspaces | Not started | Low | - |
| Support for lossless JPEG recompression | Not started | Medium | - |
| Support for progressive and responsive mode | Failed | Medium | Again... no high level API? |
| Installing on Windows | Needs testing | Low | - |